A delegate problem, create delegation in loop

[lijie]

On Fri, Jul 6, 2012 at 3:06 PM, Timon Gehr <timon.gehr at gmx.ch> wrote:

>
> It is simple. Variable declarations introduce a new variable. Closures
> that reference the same variable will see the same values.
>
> ----
>
> foreach(i; 0..3) { functions~={writeln(i);}; }
>
> is the same as
>
> for(int i=0;i<3;i++) { functions~={writeln(i);}; }
>
> is the same as
>
> {int i=0;for(;i<3;i++) { functions~={writeln(i);}; }}
>
> is the same as
>
> {
>     int i=0;
>     { functions~={writeln(i);}; }
>     i++;
>     { functions~={writeln(i);}; }
>     i++;
>     { functions~={writeln(i);}; }
>     i++;
> }
>
>
> ----
>
> foreach(i; 0..3){ int j=i; functions~={writeln(j);}; }
>
> is the same as
>
> for(int i=0;i<3;i++){ int j=i; functions~={writeln(j);}; }
>
> is the same as
>
> {int i=0;for(i<3;i++){ int j=i; functions~={writeln(j);}; }
>
> is the same as
>
> {
>     int i=0;
>     { int j=i; functions~={writeln(j);}; }
>     i++;
>     { int j=i; functions~={writeln(j);}; }
>     i++;
>     { int j=i; functions~={writeln(j);}; }
>     i++;
> }
>
> ----
>
> I think it is quite intuitive.
>
>
Understood, thanks.
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